The original Altered Beast, a side-scrolling beat 'em up, was initially released in arcades before making its way to the Sega Genesis. It features a warrior resurrected by Zeus to rescue his daughter, Athena. Gameplay emphasizes transforming into powerful beasts to defeat enemies, a key feature that defined the game and remains a memorable element to this day. The Genesis port, released as one of the console's launch titles, solidified the game's position as a cornerstone of early gaming.  Published by Sega, its success propelled Altered Beast into popular culture, and various versions appeared later, each with slight differences.

Altered Beast (USA, Europe)

Alisia Dragoon (Japan)